Optical waveguides – With optical coupler – Input/output coupler
Reexamination Certificate
2007-09-17
2009-12-08
Lepisto, Ryan (Department: 2883)
Optical waveguides
With optical coupler
Input/output coupler
C385S031000, C385S032000, C385S039000, C385S043000, C385S046000, C385S129000, C385S130000, C385S131000, C385S132000
Reexamination Certificate
active
07630602
ABSTRACT:
An optical filter module for wavelength multiplexing and demultiplexing and a method of manufacturing the same are provided. The optical filter module for wavelength multiplexing and demultiplexing includes: at least one or more input waveguides; an input-stage star coupler in the form of a slab waveguide connected to the input waveguides; array waveguide which is connected to the input-stage star coupler and in which a plurality of individual waveguides, each of which has an optical path having a predetermined length different to those of the other waveguides and has a heterogeneous waveguide interval formed of a material having a different refraction index from that of a core of the waveguides, are sequentially arranged; an output-stage star coupler in the form of a slab waveguide connected to the array waveguides; and at least one or more output waveguides connected to the output-stage star coupler. According to the optical filter module and the method of manufacturing the same, heterogeneous waveguide intervals having core materials different from those of conventional waveguides are introduced in predetermined areas of array waveguides, thereby reducing polarized light and temperature dependency and at the same time effectively removing optical coupling loss, which can occur at both ends of a heterogeneous waveguide interval, without an additional process of forming waveguides.
REFERENCES:
patent: 6118909 (2000-09-01), Chen et al.
patent: 6373872 (2002-04-01), Deacon
patent: 6636662 (2003-10-01), Thompson et al.
patent: 6865304 (2005-03-01), Ticknor
patent: 6925231 (2005-08-01), Lazaro Villa et al.
patent: 7016589 (2006-03-01), Mendoza et al.
patent: 7072545 (2006-07-01), Nara et al.
patent: 7130518 (2006-10-01), Yamazaki
patent: 7133587 (2006-11-01), Nara et al.
patent: 7228043 (2007-06-01), Shimoda
patent: 7248765 (2007-07-01), Lee et al.
patent: 2002/0118916 (2002-08-01), Lee et al.
patent: 2004/0057667 (2004-03-01), Yamada et al.
patent: 2005/0100300 (2005-05-01), Joyner et al.
patent: 2005/0123244 (2005-06-01), Block et al.
patent: 10-307219 (1998-11-01), None
patent: 2004-170627 (2004-06-01), None
patent: 2005-128419 (2005-05-01), None
patent: 10-2005-0036403 (2005-04-01), None
patent: 20050114913 (2005-12-01), None
English machine translation of JP 2004-170627.
H. Tanobe, et al., “Temperature Insensitive Arrayed Waveguide Gratings on InP Substrates” IEEE Photonics Technology Letters, Vo. 10, No. 2, Feb. 1998, pp. 235-237.
C. Nadler, et al., “Polarization Insensitive, Low-Loss, Low-Crosstalk Wavelength Multiplexer Modules” IEEE Journal of Selected Topics in Quantum Electronics, vol. 5, No. 5, Sep./Oct. 1999, pp. 1407-1412.
D. Kim, et al., “Suppression of Temperature and Polarization Dependence by Polymer Overcladding in Silica-Based AWG Multiplexer” Monday Afternoon, OFC 2003, vol. 1, pp. 61-62.
Foreign Office Action with No. 10-2007-0030355, no translation provided.
Kim Duk Jun
Kim Gyungock
Lee Jong Moo
Pyo Junghyung
Electronics and Telecommunications Research Institute
Lepisto Ryan
Rabin & Berdo P.C.
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